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[209.85.167.41]) by smtp.gmail.com with ESMTPSA id p2-20020a196042000000b00448729bbc48sm596517lfk.82.2022.03.11.11.57.42 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 11 Mar 2022 11:57:42 -0800 (PST) Received: by mail-lf1-f41.google.com with SMTP id z11so16805358lfh.13 for ; Fri, 11 Mar 2022 11:57:42 -0800 (PST) X-Received: by 2002:a2e:9904:0:b0:247:ec95:fdee with SMTP id v4-20020a2e9904000000b00247ec95fdeemr6789578lji.291.1647028186416; Fri, 11 Mar 2022 11:49:46 -0800 (PST) MIME-Version: 1.0 References: <20220308141437.144919-1-david@redhat.com> <20220308141437.144919-11-david@redhat.com> In-Reply-To: From: Linus Torvalds Date: Fri, 11 Mar 2022 11:49:30 -0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v1 10/15] mm/page-flags: reuse PG_slab as PG_anon_exclusive for PageAnon() pages To: David Hildenbrand Cc: Linux Kernel Mailing List , Andrew Morton , Hugh Dickins , David Rientjes , Shakeel Butt , John Hubbard , Jason Gunthorpe , Mike Kravetz , Mike Rapoport , Yang Shi , "Kirill A . Shutemov" , Matthew Wilcox , Vlastimil Babka , Jann Horn , Michal Hocko , Nadav Amit , Rik van Riel , Roman Gushchin , Andrea Arcangeli , Peter Xu , Donald Dutile , Christoph Hellwig , Oleg Nesterov , Jan Kara , Liang Zhang , Pedro Gomes , Oded Gabbay , Linux-MM Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 11, 2022 at 11:36 AM David Hildenbrand wrote: > > Yes, but PG_has_hwpoisoned is located on the second subpage of a > compound page, not on the head page. Ahh. Ok, I missed that when just looking at the patch. I wish we had a different namespace entirely for those separate bits or something. Linus